The Cretaceous Period lasted for nearly 80 million years. ... Back then Earth was a lot warmer than it is today and there was little or no ice at the North Pole or South Pole. Sea levels fluctuated ...

An ant and fly from the Cretaceous period offer insights into the history of Ophiocordyceps, the fungal parasite made popular ...

During this period, oceans formed as land shifted and broke out of one big supercontinent into smaller ones. Learn more about Earth's Cretaceous period from National Geographic. 1 of 10 ...

A new armored lizard species named Bolg amondol existed 76 million years ago. Paleontologist Dr. Hank Woolley discovered it ...

The Cretaceous period is one of the most crucial times in the Earth’s evolution. The division of the supercontinent, Pangaea, into Laurasia and Gondwana resulted in more diversity among animals ...

Meet the "caribou of the Cretaceous": How ancient hadrosaurs spread across Earth Scientists now have a better idea as to how the duck-billed dinosaurs known as hadrosaurs took over the planet ...

For years, scientists have thought that a continental ice sheet formed during the Late Cretaceous Period more than 90 million years ago when the climate was much warmer than it is today. Now ...

Twin calamities marked the end of the Cretaceous period, and scientists are presenting new evidence of which drove one of Earth’s great extinctions. By Lucas Joel Some 66 million years ago ...

Determining what killed the dinosaurs 66 million years ago at the end of the Cretaceous Period has long been the topic of debate, as scientists set out to determine what caused the five mass ...

Billions of Tyrannosaurus rex roamed North America during their fascinating reign as top predators, according to a team of researchers that went about the daunting task of making the calculation.

TORONTO, Ontario (CTV Network) — A new study from the University of Bath in the U.K. suggests that all modern snakes evolved from a few species that managed to survive the giant asteroid impact ...